News - ARM to add multithreading support

[HEXUS]

Future processors will add multiple threads per core, but not any time soon.

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[Steve]

I don't know much about the decode/issue unit in ARM's architecture, but I'm guessing they decided the complexity of putting two of them in parallel in front of the execution units was too great when compared to the performance boost. And of course there are already multi-core ARM designs so parallelism isn't really the problem here.

Maybe modern x86 microarchitectures simply benefit more from multithreading capabilities? Would be interesting to see numbers.